Observational Trial

Occupational Exposure

Occupational Post-Exposure Prophylaxis (oPEP)

Office of AIDS Research (OAR)

Office of Minority Health (OMH)

Off-Label Use

Open-Label Trial

Opportunistic Infection (OI)

Optimized Background Therapy (OBT)

Oral Hairy Leukoplakia (OHL)

Osteonecrosis

Osteopenia

Osteoporosis

Outcome Measure